chore(deps-dev): bump firebase-tools from 15.16.0 to 15.19.0

Bumps [firebase-tools](https://github.com/firebase/firebase-tools) from 15.16.0 to 15.19.0.
- [Release notes](https://github.com/firebase/firebase-tools/releases)
- [Commits](firebase/firebase-tools@v15.16.0...v15.19.0)

---
updated-dependencies:
- dependency-name: firebase-tools
  dependency-version: 15.19.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]